Loop-taker for sewing-machines.



ND. 639,18l. Patented D00. I2, [399.

W. A. NEELY. LOOP TAKER FOR SEWING MACHINES.

Ap lication filed Apr. 11, 1899.)

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rrnn Snares Price.

WILLIAM A. NEELY, OF LYNN, MASSACHUSETTS, ASSIGNOR TO THE WHEELER & WILSON MANUFACTURING COMPANY, OF BRIDGE- PORT, CONNECTICUT.

LOOP-TAKER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 639,181, dated December 12, 1899.

Application filed Aprilll. 1899. Serial No. 712,649. Kllo model.)

I lowing description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to circularly-movable loop-takers for sewing-machines; and it has for its object the production of means for preventing clogging or loading of the looptaker when operating on cemented or rubber goods and the like.

In sewing material which has had cement applied thereto and also with rubber goods or material having more or less rubber incorporated with or applied thereto great difficulty has been experienced in using machines provided with a circularly moving loop-taker to enter and open a loop of needle-thread, as the passage of the needle through the work causes particles of cement, rubber, &c., to ad here to the needle-thread, and such particles collect on and adhere to the loop-taker to such an extent that its frequent removal for cleaning is necessary.

By my present invention the side of the loop of needle-thread is engaged and held away from the body portion of the loop-taker as the latter passes through the loop in the formation of the stitch, so that the deposition of foreign matter on the loop-taker is pre- Vented.

Figure 1 represents'a sufiicient port-ion of a sewing-machine to be understood with a circu1ar1y-movable loop-taker embodying one form of my invention. Fig. 2 is a rear side elevation, enlarged, of the loop-taker shown in Fig. 1, showing aloop of needle-thread as partially surrounding the loop-taker; and Fig. 3 is a top or plan view of the loop-taker shown in Fig. 2.

I have herein shown my invention as applied to a loop-taker substantially such as shown in United States Patent No. 328,165, dated Ocotber 13, 1885, and in Fig. 1 the bedplate A, needle-bar A eye-pointed needle A carrying the needle-thread '6, presser-foot bar B presser-foot B", and the loop-taker guide D may be and are substantially as shown in said patent.

The loop-taker is herein shown as composed of a partial hoop g, Fig. 2, connected by a bridge-piece g, extended from the heel g to and joining the hoop a short distance back of the shoulder g at the rear of the point g the junction of the bridge-piece and hoop forming a shoulder g with a recess g between it and the shoulder g ,'all as in said patent.

The loop-taker has a concavo-convex back plate 9 provided with a stud g ,(see Fig. 3,) extended laterally from the concave face of the back plate to support the bobbin-case. (Not shown.)

The loop-taker receives circular motion in any suitable manner, the same forming no part of my invention.

vided with a guard, shown as a thin elon-' gated rib m, of brass or other suitable and preferably-soft metal, mounted on the convex face of the body or plate 9 and of a sufficient height to engage the side of the loop 2% of needle-thread and hold it away from or out of contact with the adjacent portion. of the body of the loop-taker as the latter moves through the loop. The guard prevents the loop side from resting upon and dragging over the convex surface of the plate 9 and efiectually overcomes the transfer of cement, rubber, or other foreign matter from the thread to the loop-taker, so that no difficulty whatever is experienced from this source in sewing cemented or gummy fabric.

I prefer to so locate the guard pin or rib m on the loop-taker that it will substantially cross the axis of rotation of the latter, as herein shown, (see Figs. 1 and 2,) the guard eX- tending from near the heel 9 across the back plate toward the shoulder g at the root of the point 9 and in order to more easily cooperate with the loop the'end of the guard may be slightly curved, as at m, in the direction of the point. At each end the guard tapers or merges gradually into the face of the plate, as at 3 4, Fig. 2, to prevent any derangement of the loop When the side thereof is engaged by the guard.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. A circularly-movable loop-taker having a point and a heel, a concavo-convex back plate, and an elongated guard-rib on the exterior of the back plate and crossing the axial center of the loop-taker to engage and hold the side of the loop from contact therewith.

2. A circularly-movable loop-taker having a point and a heel, a concave-convex back plate, and aguard-rib on the exterior of the back plate, extended in a substantially straight line from near the heel across the axial center of the loop-taker to the root of the point and curved toward the latter.

3. A loop-taker having a circularly-curved periphery terminating in a heel and a point, a concavo-convex back plate provided at its inner side with a stud, and a guard-rib extended substantially diametrically across the convex surface of the back plate from near the heel toward the root of the point.

4. A circularly-movable loop-taker having a point and a heel, a coneavo-convex back plate, and a thin guard-rib on the convex face of the back plate, extended from near the heel across the axial center of the loop-taker.

5. A circularly-movable loop-taker having a point and an externally-convex back, and a thin guard-rib on the back crossing the axial center of the loop-taker to engage the side of the loop after the same has been entered by the point, the ends of the rib gradually rising from the back.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM A. NEELY.

Witnesses:

JOHN G. EDwARDs, AUGUSTA E. DEAN. 

